The timing chain china timing chain functions just as that a timing belt does. The difference between the two is simply the material and location. One is constructed of metal and the other, a reinforced rubber. Though timing chains were utilized first, belts were introduced into vehicles in the 1960s. Belts are quieter and due to their material, less costly to produce. Timing chains are housed within the engine and receive lubrication from engine essential oil and can last a long time, while timing belts are located beyond the engine and tend to dry and crack. Within the last few years, however, more vehicle manufacturers have integrated timing chains back into some vehicles with vast improvements such as a reduction in sound and vibrations, different then a timing belt not absolutely all drinking water pumps are powered by the timing chain. Verify your owner’s manual to determine what kind of timing operation your vehicle utilizes because they can vary greatly from year to calendar year and by an auto manufacturer.